They don't seem to build houses with gutterings but we need some out back as having it roofed over. Now this metal guttering they all seem to use is quite pricey at 700 baht a metre so I suggested plastic stuff I have seen in homepro etc, both builder and wife said this is no good, no reason given. They both say metal is best, the only advantage I can see with the metal is that it's a lot deeper so will cope with a downpour better. Any advice on it? Actually, the builder can't do metal for some reason, the one before him could not do electrics and the one before that could not follow instructions!